SHARED SECRET-BASED BLOCKCHAIN STORAGE
Implementations of the present application include receiving a request to store a data item in the blockchain network, and in response: dividing the data item into a plurality of data partitions; assigning each data partition to a different node in the blockchain network, wherein each node stores the assigned data partition in a privately-maintained distributed hash table; and storing information associated with each data partition in a blockchain maintained by the blockchain network, the information including a storage location of each data partition.
1 . A computer-implemented method for distributed data storage in a blockchain network, the method comprising:
receiving a request to store a data item in the blockchain network;
in response to receiving the request:
dividing the data item into a plurality of data partitions;
assigning each data partition to a different node in the blockchain network, wherein each node stores the assigned data partition in a privately-maintained distributed hash table; and
storing information associated with each data partition in a blockchain maintained by the blockchain network, the information including a storage location of each data partition.
2 . The computer-implemented method of claim 1 , further comprising:
receiving a request to retrieve the stored data item; and
in response to receiving the request to retrieve the stored data item:
retrieving each stored data partition from the assigned nodes based on the information including the location of each data partition stored in the blockchain;
reconstructing the stored data item from the stored data partitions; and
sending a response to the request to retrieve the stored data item, wherein the response includes the reconstructed data item.
3 . The computer-implemented method of claim 1 , further comprising storing instructions in the blockchain for restoring the data item from the stored data partitions.
4 . The computer-implemented method of claim 2 , wherein reconstructing the stored data item includes concatenating the retrieved data partitions to generate a copy of the data item.
5 . The computer-implemented method of claim 2 , further comprising storing a record of the request to retrieve the stored data item in the blockchain.
6 . The computer-implemented method of claim 2 , wherein retrieving each stored data partition, reconstructing the stored data item from the stored data partitions, and sending the response to the request to retrieve are performed by a smart contract stored in the blockchain and executing on the blockchain network.
7 . The computer-implemented method of claim 1 , wherein each distributed hash table stores a file path to the data partition, a value of the data partition, and an identity of the associated node.
8 . The computer-implemented method of claim 1 , wherein storing information associated with each data partition in the blockchain includes storing a path to each data partition on the blockchain.
9 . A non-transitory computer-readable storage medium storing one or more instructions executable by a computer system to perform operations comprising:
receiving a request to store a data item in a blockchain network;
in response to receiving the request:
dividing the data item into a plurality of data partitions;
assigning each data partition to a different node in the blockchain network, wherein each node stores the assigned data partition in a privately-maintained distributed hash table; and
storing information associated with each data partition in a blockchain maintained by the blockchain network, the information including a storage location of each data partition.
10 . The non-transitory computer-readable medium of claim 9 , the operations further comprising:
receiving a request to retrieve the stored data item; and
in response to receiving the request to retrieve the stored data item:
retrieving each stored data partition from the assigned nodes based on the information including the location of each data partition stored in the blockchain;
reconstructing the stored data item from the stored data partitions; and
sending a response to the request to retrieve the stored data item, wherein the response includes the reconstructed data item.
11 . The non-transitory computer-readable medium of claim 9 , to the operations further comprising storing instructions in the blockchain for restoring the data item from the stored data partitions.
12 . The non-transitory computer-readable medium of claim 10 , wherein reconstructing the stored data item includes concatenating the retrieved data partitions to generate a copy of the data item.
13 . The non-transitory computer-readable medium of claim 10 , to the operations further comprising storing a record of the request to retrieve the stored data item in the blockchain.
14 . The non-transitory computer-readable medium of claim 10 , wherein retrieving each stored data partition, reconstructing the stored data item from the stored data partitions, and sending the response to the request to retrieve are performed by a smart contract stored in the blockchain and executing on the blockchain network.
15 . The non-transitory computer-readable medium of claim 9 , wherein each distributed hash table stores a file path to the data partition, a value of the data partition, and an identity of the associated node.
16 . The non-transitory computer-readable medium of claim 9 , wherein storing information associated with each data partition in the blockchain includes storing a path to each data partition on the blockchain.
17 . A computer-implemented system, comprising:
one or more computers; and
one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
receiving a request to store a data item in a blockchain network;
in response to receiving the request:
dividing the data item into a plurality of data partitions;
assigning each data partition to a different node in the blockchain network, wherein each node stores the assigned data partition in a privately-maintained distributed hash table; and
storing information associated with each data partition in a blockchain maintained by the blockchain network, the information including a storage location of each data partition.
18 . The system of claim 17 , wherein the operations further comprise:
receiving a request to retrieve the stored data item; and
in response to receiving the request to retrieve the stored data item:
retrieving each stored data partition from the assigned nodes based on the information including the location of each data partition stored in the blockchain;
reconstructing the stored data item from the stored data partitions; and
sending a response to the request to retrieve the stored data item, wherein the response includes the reconstructed data item.
19 . The system of claim 17 , configured with instructions executable by the one or more computers to storing instructions in the blockchain for restoring the data item from the stored data partitions.
20 . The system of claim 18 , wherein reconstructing the stored data item includes concatenating the retrieved data partitions to generate a copy of the data item.